Baler



May 21, 1946. Y D. JOHNSTON BALER Filed May 15, 1942' 4 Sheets-Sheet 1 May 21, 1946.

D.JOHNSTON BALER Filed May 15, 1942 4 Sheets-Sheet 2 vlll Ill

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Jan 622g May 21, 1946.,

D. JOHNSTON BALER Filed May 13, 1942 IIIIIIIIII 4 Sheets-Sheet 4 Rue/2607."

' other end of the bale.

Patented May 21, 19 R.

Douglas Johnston, Sheibyvllle, m, asslgnor, byi

mesne R. 'l'allman, forty-live twelve and one-half Tallman assignments, otthirtypercenttoliealie percenttoG.L.'lallman, percent toJ. L. Tallman,

and twelve and one-half per cent to Emma S.

' Application May 13, 1942.813113] No. 442,877

16 Claims. (Cl. 100-20) My invention relates to balers and more particularly to means for automatically passing or threading wire about a bale in a baler.

In balers for straw or hay now commonly in use blocks or division boards are used between the ends of the bales so that 'wire may be threaded manually about the bale. Each block is provided with grooves through which the wire is readily passed by one man on one side of the bale case or frame to another man on the other side of the bale case. Thus when a new bale is being formed the first man passes several wires through the grooves in the division board to the second man on the other side, who takes the ends of the wires and pulls the wires up to the There the second man passes the ends of the wires back to the first man who has retained the other ends of the wires, and then he ties the ends of each wire together. This method of bindin the bale is solaborious and slow that the average speed of baling is but one or two bales per minute for two men. Another disadvantage of this method of baling is that considerable skill is required to handle the I division-boards without excessive breakage since these boards are quite expensive. It is particularly true in the operation of combine hay andstraw balers that skillful timing of the insertion of the division blocks must be had in order to keep up with the operation of the machine.

In order to simplify the process of binding bales of hay, straw or other material, it has been proposed automatically to wrap twine about the bale and to bind it much in the manner of a grain binder. Bales of hay or straw however are so heavy that even by using a heavy twine, the binding will not hold and hence a considerable number of bales must be lost. In the storage of such bales the twine deteriorates so as to be weakened and frequently insects androdents destroy the twine binding so that the bale cannot be handled. Due to these disadvantages, others have endeavored to bind automatically bales of straw or hay with wire, but such machines have not been practical commercially because of their complexity, of the delicate mechanisms, of the need for frequent adjustment and repair, and because of the great initial cost.

Accordingly it would be desirablaespecially at the present time when man power is so valuable, to provide some method and apparatus for reducing the labor required in operating baling presses, and'particularly in -the case of combine hay and straw balers. In accordance with my invention this objective may be obtained without the use of delicate mechanisms. gears, cams.

- toggles, splines. or other complicated or expensive parts which might require frequent adJust-. ment or repair. This is accomplished by an automatic mechanism which receivesthe ends of baling wires when a new bale is to be formed and which threads the wires across one end,

along one side and back across the other end: of the bale so that a single operator-on one side of a bale case can easily double the speed of operation as compared to the former type of baling press and combinebalers requiring an operator .on each side of the bale Therefore it is an object of my invention to provide a threader means for a baler or a baling press for passing wire about a bale of material, and which will be simple and reliable in operation.

Another object of my invention is to provide an improved apparatus for securing or binding bales of material with wire.

Still another object of my invention. is to provide in a baler, means for actuating threader means in response to the formation of and to the completion of a bale.

Still another object 01' my invention is to provide an improved baler having a source of power for the actuating means of a threader member, and means coordinating the effectiveness of the source of power with the operation of the compressing plunger of the baler.

A further object of my invention is to provide in a baler, a self reversing actuating means for threader members which will operate each time for a period until just after said, means has begun to reverse its direction of operation.

A further object of my invention is to provide a baler having threader means for automatically passing binding wire or metal binding strips about a bale and for relieving the tension of the wire so that the binding wire may be released inanually from the threader.

A still further object of my invention is to provide an improved baling press having threader members which will pass wire about the bale without incurring the threader and the wire.

Still another and further object of my inven= tion is to provide an improved baler which will reduce the manual effort heretofore required and which will have a higher rate of operation.

Other and further objects of my invention will with the accompanying drawings wherein: Fig.

appreciable friction between 2 a 1 is a side view of'a hay and straw combine baler which incorporates my invention; Fig. 2 is a top view of the apparatus shown in Fig. i; Fig. 3 is an enlarged side view of a portion of the threader assembly constituting my invention; Fig. 4' is a cross section of a valve used in the threader assembly; Fig. 5 is a cross section view of the wire chuck and a portion of the threader; Fig. 6 is a detailed view of one element of the wire chuck of Fig. 5; Fig. 7 is a cross'section view of the; member shown in Fig. 6 taken along the line 1-1;: Fig. 8 is a cross section of. the threader member along the line 8--8' of Fig. 9 and Figs. 9 and i show the balecase and the threader assembly in various positions to illustrate the cycle of operation.

of the type commonly known as a hay and straw ably supported from a wheel and axle assembly combine baler. This baler has a frame ll suit- -ably.supported from a wheel and axle assembly 12 positioned at an intermediate point on the frame I I. At the forward end of the frame ii there is attached a draw bar l3 which may be connected to a suitable source of motive power such as a tractor.

Adjacent the front end of the frame ll there is mounted an internal combustion motor or engine H which by means of a suitable belt l drives a reduction gear assembly It. The reduction gear assembly is connected through power transmission means contained in a housing I! to actuate the pick-up elevator l3 of the combine baler which has its front end supported by suitable wheels l9. The pick-up elevator l8 picks up the hay or straw and delivers it to a transversely positioned conveyor 2| which.

in turn delivers hay or straw to a compression Referring more particularly to Figures 1 and 2 of the drawings, there is shown a baling press bers 35 across the bale chute 3| at the time when a new bale is about to be formed. The action of the compressing plunger 23 within the compression chamber 22 is such that the compressed hay "engages the threader members 35 thereby causing the supporting'frame 33 and the assembly connected thereto to be moved toward the rear end of the guide rails 32. At a predetermined point in the travel of this assembly toward the rear which is in the vicinity of the rear ends of the guide rails 32. means responsive to the. formation of the bale causes the actuating means 34 to withdraw the needle-like threader members 35 from across the bale frame or chute 3|.

When these threader members are withdrawn,

the support frame 33 is returned to its original position by the action of a spring 35.

chamber 22. The hay delivered into the compression chamber 22 is tamped down by a tamper assembly 23 which is mounted adjacent the end.

of a driven lever 24. The driven lever 24 is pivoted upon a support 25 mounted on the frame II. by mean of a spring assembly 25 to a driving lever 21 which in turn is connected to a link 23 connected to a connecting rod 29. The connecting rod 29 interconnects certain gears of the gear reduction assembly l3 and a compressing plunger 20 positioned to operate in a compression chamber 22. Since baling presses of this type are wellknown inthe art, for a more complete under standing of the structure and operation thereof,f

reference may be made to United States Letters Patent No. 2,068,886, patented January 26, 1937,

upon the application of Raymond D. MacDonald, l which application was assigned to the assignees of the present application.

The driven lever 24 is resiliently connected The automatic self-reversing hydraulic actuate ing means 34 for the threader members 35 is supplied by power from a source of. wer including an oil tank or reservoir 31 which has a pipe or' fluid passage 38 connected to a pump cylinder 39 mounted underneath the rear end of the frame H. The pump 39 is provided with a packing gland 4| and a stufllng box 42 to form a seal between the cylinder39 and the displacement piston 43. The pistonis actuated from means connected to the reduction gear assembly l5 and one manner of accomplishing this is to provide a connection actuated by the compressing plunger 23 of the chamber 22 by means of a bolt 44, a connecting lug 45, and a flat bar 45 which is directly connected to the piston. This arrangement ofthe hydraulic pump which obtains fluid through the pipe or conduit 33 fromthe reservoir 31 is such that power is supplied by the pump only during the time of a non-compressing stroke or after a compressing stroke of the plunger 20. The hydraulicpump is connected to supply fluid through the conduit 41, which is connected to a flexible conduit 48 to a control valve 49. The control valve 49 is connected to a lever linkage comprising the levers 5|, 52, and 53 which are 1 arranged so as to be responsive to the forma- Supported by the other extremity of the frame I l and extending longitudinally to the rear from I the frame and the compression chamber 22 there is a bale case or frame 3| which is provided with an apparatus for threading baling wire around i a bale of material in accordance with my invention. This apparatus is mounted on one side of the bale case 3| and it'comprises a pair of guide rails or rods 32 upon which a threader assembly may travel along a'. portion of a bale chute 3l.-

Supported from the guide rails 32 there is a suitable supporting frame 33 which supports the threader assembly including an automatically self-reversing hydraulic actuating mechanism 34 which is connected to operate a plurality of shuttle-like threader members 35. means 34 operates to move the threader mem- This actuating tion of and to the completion of a bale of material. The valve 49 is arranged to permit the fluid from the pump through the hose 43 to be transmitted to the hydraulic actuating means 34 and to be returned through a hose 54 and a fluid con vided a spiked wheel 55 mounted so as to project into the path of bales of hay or straw passing down the bale case 3|. 0n the surface. of the spiked wheel 55 there is provided a stud 51 which will engage a collar or dog mounted adjacent one end of a rod 59 which is supported longitudinally of the bale frame or case 3|. The rodis supported by suitable bearing members 5| and 52 so that the rod may be reciprocated. The rod 59 is provided with a collar or dog 53 positioned at an intermediate point on the rod, and a spring 54 is mounted between the bearing 6! and the dog 63 so as to bias the rod in a direction toward the front of the baling press. At the other end of the rod 59 there is provided a collar or dog 65 which will engage the end of the lever 58 whenever a bale has been completely formed. This action occurs when the spiked wheel 58 has been rotated sufficiently so that the stud 51 engages the collar or dog 58 at the end of the rod 59 thus moving the rod toward the rear of the baler, and causing the dog 88 to engage the end of the lever 53 thereby tripping the valve 49 by means of the linkage including the levers and 52. The rod 59 is limitedin its forward movement due to the spring 64 by a stop collar 66 secured thereto so as to engage the end of the bearing 6 I. When the spiked wheel 56 has passed a predetermined point, the stud 51 will clear the dog or collar 58 thereby permitting the rod 59 to return to its original position as determined by the action of the spring 64 and the stop 66.

By referring to Figures 3, 9, and 10, it will be seen that the support frame 33 mounted upon the guide rods 32 which extend along one side of the bale chute or frame 3| supports the threader members'35 and the hydraulic actuating means 34 therefor. The hydraulic actuating'means 34 comprises an automatic self-reversing hydraulic motor which preferably is of the type shown, described and claimed in the United States Letters Patent Re. 21,789, reissued May 13, 1941, upon the application of the present inventor, original Patent No. 2,128,048, dated August 23, 1938. This hydraulic motor is so constructed that as long as the fluid pressure is supplied to the motor, the

motor will continue to operate reciprocatingly] since this motor is a double acting hydraulic motor having valves contained therein automatically actuated to control the reciprocation of the motor parts. The hydraulic actuating means 34 in the present instance, however, does not receive a continuous supply of fluid pressure due to the controlling action of the valve 49 which permits the hydraulic source of power comprising a hydraulic pump to be only intermittently effective.

Furthermore, the power supplied by the pump is of intermittent action since the pump supplies power only during the non-compressing period of the compressing plunger 20 of the compressing chamber 22.

Previously it was stated that the lever 53 operating upon the levers 52 and 5| controlled the operation of the valve 49. It will be seen that the lever 5| is secured to a rotatable shaft 61 which is mounted so that one end thereof is supported in a suitable bearing member 68 secured to the support frame 33 and the other end thereof is mounted in a bearing member 69 supported by a support 10. The support 18 is held in position by suitable brackets or braces 1l fastened to the frame or support 33, and the support 10 serves as a bearing for the automatically reversing hydraulic actuating mechanism 34. The shaft 61 is furthermore provided with a dog 12 secured thereto adjacent the end of the shaft at the hearing 69. A spring 13 is mounted to surround the shaft between the dog 12 and the bearing 69 so as to bias the shaft in a direction toward the bale chute. The shaft or trip rod 61 has keyed thereto a connecting member 13' which is secured to one end of a valve rod 14 of the hydraulic valve 49. Thus longitudinal movement of the trip rod 61 will produce displacement of the valve rod 14 thereby to control the valve 49. The connecting member 13' does not partake of the rotational movement of the trip rod 61 but only of the longitudinal movement thereof since the member 13' is keyed to the rod by a set screw or key 15 positioned in an annular recessin the trip rod or shaft 61. The dog 12 adjacent to the end of the trip rod 61 is positioned so as to engage a. cylinder dog 16 mounted at one end of the hydraulic actuating means 34. Rotation of the shaft. 61 thereby causes the dog 12 to be moved so that it clears the cylinder dog 16 thus permitting the spring 13 to move the trip rod 61 toward the bale chute. The cylinder dog 18 at certain positions of the operating mechanism. also engages a trigger dog 11 pivotally mounted on the trip rod 61 I at an intermediate point in the vicinity of the connecting member 13; A suitable spring 18 is provided to return the trigger dog 11 to a position where the trigger dog 11 will be engaged by the cylinder dog 18 after the cylinder dog has passed beyond the dog 11 when the actuating means 34 is moving the threader members 35 across the bale frame or chute 3|.

The control valve 49 will be better understood by reference to Figure 4 wherein fluid supplied by the power source or pump enters into the valve through the conduit 48. The return conduit 54 is a low pressure return which is connected to return the fluid to the fluid or oil reservoir. Another outlet 19 is provided so that fluid passing through the valveis connected to the hydraulic actuating means 34. The outlet 19 and connecting fluid passage is in communication with the end of the hollow piston rod 8| which extends from the frame 33 to a point in the vicinity of the support 18.

In the position shown in Figure 4 the valve rod 14 permits communication between the conduits 48 and 19 thereby permitting fluid power to be transmitted to the reciprocating motor 34 since I the valverod 14 is provided with a recessed annulus 82. The fluid returning from the hydraulic actuating means passes from the conduit to the oil reservoir 31. When the valve rod 14 is actuated to the other position to the right, it will be seen that the fluid conduits 48 and 54 are in communication. The solid piston end 83 of the valve rod will be positioned so as to close the part communicating with the fluid passage 19. valve rod 14 is moved from right to left the cylinder to the left of the piston end 83 will have accumulated oil therein which if not allowed to escape would prevent operation of the valve. In order to permit this accumulation to escape there is provided a vent 84 drilled so that the cylinder to the left of the piston end 83 in the valve rod 14 is in communication with an annulus 85 in the right hand portion of the valve structure 49. The annulus 85 is larger than the piston end 84 of the rod 14 so that there always is communication with the outlet passage 54 thereby preventing any pressure or resistance from being built up at either end of the valve 49.

The end of each of the threader members 35 is provided with a chuck 81 for receiving andfor retaining until released the end of a baling wire. The operation and the structure of the chuck 81 will become more apparent from the following description taken in connection with the Figures 5, 6, and '1. The chuck 81 is supported by a hollow member 88 which may be of any configuration. preferably cylindrical in form. The chuck 81 has a member 89 having longitudinal slot 99 therein, to form bifurcated portions 9| and 92, extending through a major portion of the member 89. The other end of the member 89 is provided with a solid portion 93 having a configuration complementary to the inside of the support member 88; and the end of the member 93 is acted, upon by a suitable spring 94 mounted with- As the,

in the support 88. The member 88 is secured in the support 88 by a pin 95 fastened in the support 88 and passing through an elongated aperture 98 located adjacent to the bottom of the slot 90 and in a direction transverse with respect thereto.

Positioned within the slot 80 there is a pair of levers pivotally supported in a common plane by suitable fastening means such as hearing pins 91 and 98. These levers 98 and IOI are each provided adjacent one end thereof with law mem-l bers I02, I08 and at the opposite ends with portions extending beyond the fastening means 85. Each of these ends is provided with an inner surface such as I04 adapted to engage the pin 85 thereby to force a gripping or closing action of the jaw portion and with an outer surface such as I adapted to engage the extremity I01 of the support 88 whenever the chuck is moved against the action of the spring 94. In order to facilitate the insertion of the end of a wire for baling purposes it may be desirable to provide the bifurcated end with a concentric recess or opening I08. Whenever it is desired to insert the wire into the end of a chuck the member 88 is manually moved against the action of the sprin 94 so that theouter surface I05 of the levers 88 and IN will engage the outer extremity of the support 88- thereby forcing apart the cooperating jaw portions I02 and I08. Upon insertion of the wire the chuck is released whereupon the action of the spring 94 against the end 88 forces the member 88 outwardly so that the fastening pin 95 engages the surface I04 to cause the laws to engage the wire. Any further outward move of the chuck away from the support 88 serves to increase the biting actionof the Jaw portions I02 and I08 and hence the strain on the baling wire such as I09 serves to increase the grippingaction on the end of the wire.

By reference to Figures 8, 9, and 10, it will be i noticed that each threader member 85 is tapered so that the threader may be readily withdrawn from the bale chute. This tapered structure has a great advantage over a straight structure since the friction of the hay or straw against the shuttle or needle-like threader member becomes less as the threader member is removed. The threader member 85 has a cross section such as shown in Figure 8 which provides a channel portion on the back side of the threader member 85 wherein a wire I09 may lie when the wire is moved around the end of a completed bale. Thus the channel formation provides a structure which eliminates the possibility of friction between the baling wire and the threader member.

The operation of the above described invention will be best understood by reference to Figures 9 and 10. In Figure 9 the formation of the bale is substantially complete so that the following stroke of the compressing plunger 20 will advance the bale being formed so that the spiked wheel 58 will have been rotated sumciently to cause the stud 51 mounted therein to engage the dog 58 on the shaft 59 so as to move the shaft against the action of the spring 84'. The movement of the shaft 59 at that time will then cause the dog 55 at the end thereof to engage the end of the lever arm 58 thereby swinging the lever arm toward the position shown in Figure 10..

The action of the dog 85 against the lever 58 is such that levers 52 and 5| are actuated thus producing rotation of the trip rod 81 so as to release the dog I2 from engagement with the stop mem-" ber I8. The release of the dog 12 from the stop member permits the spring 18 to longitudinally move the trip rod 81 so that the arm I8 attached to the valve rod I4 will bring about an actuation of the control valve 49. The rod 14 thereupon will be moved to the position shown in Figure 4 thus causing the fluid supplied by the source of hydraulic power through the inlet conduit or hos 48 to pass to the conduit 19 which is connected to the hydraulic actuating means84. The supply of power to this means 84 first moves the tapered threader members 85 to the right; thereupon it automatically reverses and moves threader members 85 to the left across the bale case 8| to the positionshown in Figure 10.

' The threader members 85 and the hydraulic actuating mean 84 do not stop in this position shown in full lines in Figure 10 since it will be remembered that the hydraulic actuating means 84 is of the self-reversing reciprocating type. The actuating means 84 thereupon starts a movement toward the right until the dog 18 on the outer member of the actuating means 84 engages the valve rod trigger II. This action of the dog I8 against the valve rod trigger I1 produces a longitudinal movement of th trip rod 81 so that the valve rod 14 of the valve 48 is again moved to the extreme right hand portion thereby shutting ofl' the supply of pressure fluid to the conduit I9 shown in Figure 4. This movement to the right is relatively small but sufllcient to relieve the tension on th wire I09 so that now the operator may actuate the wire chuck 89 against the action of the spring 94, shown in Figure 5, thereby to release the wire.

From this figure it will b seen that the end of the wire I08 which has been removed from the chuck 81 supported on the end of the threader member 85 is twisted so that the end forms a loop In located adjacent to frame II of the baling 8 press. This new wir is inserted into the chuck. The compressing plunger 20 however has been moving hay against the threader members 85 thereby causing the entire assembly supported by the frame 88 and mounted on the rods 82 to be moved longitudinally along. the bale case or frame 8|. To illustrate this action there has been shown in dotted lines such position in Figure 10. As the compressing plunger moves forward the hay being compressed is advanced in the compressing chamber 22 to the bale case 8| and the compressed hay is retained in position by a pair of dogs I II extending into the sides of the bale case or frame 8| so that the hay will not folgaw the non-compressing stroke of the plunger The compressing plunger 20 continues to supply additional hay during the formation ofthe ,bale so that eventually the threader assembly will have moved down the bale case a distance which is beyond the dotted line representation of Figure 10. When this occurs the end of the lever 58 engages the dog 68 mounted atan intermediate point on the rod 59. This brings about a rotational movement of the trip rod 61 through the actuation of the lever members 52 and 5|. This rotational movement of the trip rod 81 permits the valve rod trigger 11 to be disengaged from the cylinder dog ll thereby again permitting the spring 13 acting against the collar 12 to produce a longitudinal movement of the trip rod '1. Thus through the link ll the valve rod 14 of the valve 4! is actuated so as to again permit hydraulic pressure from the source of power to produce actuation of the hydraulic actuating means 34. Thus in response to a predetermined stage of the formation of the bale of hay the means 34 will be thus energized so as to withdraw the threader members 36 thus passing the baling wires it! across one end of the bale which is being formed. The hydraulic actuating means 34 moves toward the right until the cylinder dog It engages the trip rod dog 12 thus producing a longitudinal movement of the trip rod 81 to actuate the valve rod II to the right thus shutting 03 the supply of fluid to the hydraulic actuating means. When the ends of the needle-like threader members 35 have cleared the bale case 8| the entire threader assembly supported from the frame 33 on the rods 32 is moved toward the front of the bale case II by the action of the spring 38 so that the carriage is moved to the forward end of the supporting rods 32.

The threader members 3! and the hydraulic actuating means remain inoperative at that point until sui ncient hay has been compressed by the hay plunger so that the bale being formed has moved the previously formed bale sufllciently down the bale frame or case 3| so as to actuate the spiked wheel 58 to a point where a stud i'l thereon engages the dog 58 on the shaft 58 to trip or move the lever 83. Actuation of the lever 53 produces rotational movement of the trip rod 81 thus disengaging the dog I! mounted thereon to permit actuation of the valve rod 14 of the valve 49. The valve 49 therefore is in a condition to supply power to the hydraulic actu ating means 34, but this does not produce immediate actuation of the hydraulic actuating means since it will be remembered that the hydraulic source of power is effective following a compressing stroke or during the non-compressing stroke of the plunger 20. Thereforeas soon as the compressing plunger 20 has completed a compressing stroke, power will be supplied to the hydraulic actuating means 34 so that the threader 35 is moved across the other end of the bale without interference with the compressed hay which is retained in position by the dogs ill or by the compressing plunger 20. Thus it will be seen that the source of hydraulic power supplied by the cylinder 39 and the displacement plunger 33 is .of intermittent nature effective following a compressing stroke of the piston 20. The intermittent supply of. power is further controlled by the valve 43 so that only in response to the formation of the bale or in response to the completion of a bale is the power source permitted to be effective to actuate the automatically reversing hydraulic actuating means 34.

From this it will be seen that but a single operator isneeded on the one side of the bale case 3 i and thatthe operator merely has to insert the ends of the baling wires "is into the chucks 89 and to remove the ends therefrom when the wires have been threaded around the bale. The

operator then fastens the ends of the wires to-\ gether and supplies a new wire end to each chuck. There are no division boards or separation blocks necessary in the operation of this baler, thereby -bers being moved longitudinally along said bale.

or balers. Y

While the invention has been shown as applied to a hay and straw combine baler, it of course willbe understood that the invention may be applied to stationary baling presses. Furthermore, it will become apparent that while the binding means utilized in the disclosure comprises a baling wire that other binding means such as flexible metal strips and the like having suitable fastening ends may be utilized. a

While for the purpose of illustrating my invention, a particular embodiment has been "shown, it is to be understood that modifications may be made in the elements employed and in their arrangements without departing from the spirit and scope of my invention as set forth in the appended claims.

What I claim as new and desire to Letters Patent of the United States is:

1. In a baler, the combination comprising a compression chamber having a plunger, a bale frame extending longitudinally from said compression chamber, a plurality of threader members having actuating means for moving said threader members alternately in opposite directions transversely of said frame, means responsive to a predetermined amount of travel of, a bale along said frame for causing said actuating means to move said threader members across said frame, said threader members thereupon being moved longitudinally along said frame by secure by successive movements of said plunger, .means responsive to a predetermined amount of travelof said threaderv members along said frame for causing said actuating means to withdraw said threader members from said frame, and means for returning said threader members to their' v members having actuating means for moving said threader members alternately in opposite directions transversely of said frame, a power supply for said actuating means operating to supply power only during a non-compression stroke of said plunger, said threader members being moved longitudinally along said frame by successive movements of said plunger, means responsive to a predetermined travel of said threader members along said frame for causing said actuating means to withdraw said threader memhere from said frame, means for returning said threader members to the other end of their travel along said frame, and means responsive to the complete formation of a bale for causing said ac-v tuating means to move said threader members across said frame. 1

3. In a baler, the combination ofa' compression chamber having a reciprocating---compres sion member, a bale frame extending longitudinally from said chamber, a plurality of binding threader members arranged to be positioned across said frame, said threader members having means for receiving the ends of binding material, means for reciprocatingly actuating said threader members, said binding threader memframe as successive operations of said compression member compress material to form a bale,

means responsive to a predetermined travel of said threader members along'said frame for caus aaodccs spect to said-balecase, means mounting and perrial back to the side of the frame on which the binding material was received by said threader members. h

4. In a baler, the combination of a compression chamber having a reciprocating compression member, a bale frame extending longitudinally from said chamber, a plurality of binding threader members arranged to be positioned across said frame, each of said threader members having means-for receiving the end of a binding wire, a self-reversing actuating means for said threader members, said theader mem-,

bers being moved longitudinlly along said bale frame as-successive movements of said compressing member operate to form a bale, means responsive to a predetermined travel of said threaders along said frame to supply power to said'actuating means for a time until said means has begun to reverse its direction of operation,

said actuating means thereby operating to with-1 draw said threader members from said frame,;

means for returning said threader members to their initial position along said frame, and means responsive to the completion of a bale for supplying power to said actuating means for a time until said actuating means has begun to reverse its direction, said actuating means thereby operating to move said threader members across said frame to bring the ends of the binding wire back to that side of the frame on which the binding wire was received bysaid threader members.

5. In a baler, the combination of a compression chamber having a reciprocating compressing member, a bale frame extending longitudinally from said chamber, a plurality of binding threader members arranged to be positioned across said frame to receive the endsof binding wire, said threader members being moved along said frame by successive movements of said compressing member to compress'material to form a bale, self-reversing actuating means for said threader, means for supplying power to said latter means during a non-compression stroke of said compressing member, means responsive to,

a predetermined travel of said threader members along said frame to supply power to said actuating means until just after said means has begun to reverse the direction of movement of said threader members thereby to withdraw said threader members from said frame, means for returning said threader members to their initial position along said frame, and means responsive to the completion .of a bale for supplying power to said actuating means until just after said means has begun to reverse [the direction of said threader members thereby to move said threader members across said frame to bring the ends of the binding wire back to that side of the frame on which the binding wire was received by said threader members.

6. The combination in a-baler comprisinga baling wire threader, a bale case, power means for moving said threader transversely with remitting said threader to be moved longitudinally along said case during the formation of a bale, means responsive to the movement of a bale for controilingsaid power means to withdraw said threader from said case and to permit said threader to return. to the back of a bale, and means responsive to the formation of a bale for controfiing said power means to move said threader across said case at the rear of a bale.

7. The combination in a baler comprising a baiing wire threader, a bale case, power means for moving said threader transversely with respect to said bale case, means mounting and permitting said threader to be moved longitudinally along said case during the formation of a bale, means responsive to the movement of a bale for controlling said power means to withdraw said threader from said case and to permit said threader to return to the back of a bale, and means responsive to the completion 'of a bale for controlling said power means to move said threader across and beyond said case, and to partially reverse said movement of said threader to reduce the tension on the balin wire.

8. In a baler the combination of a bale frame and a plurality of threader members for threading binding wire about the halo, said threader members each having a tapered elongated configuration terminating with means for receiving the end of a binding wire, self-reversingactuat-- ing means for moving saidthreader members transversely of said frame, a source of power therefor, means located adjacent said frame for supporting said threader members and said actuating means so as to permit said threader members tobe moved longitudinally along said frame, means responsive to a predetermined movement of said threader members along said frame for supplying power to said actuating means for a period sufficient to withdraw said threader members from said frame and for said actuating means to begin reverse operation, means thereupon operative to returnsaid threader members to their'initial starting posi-.

tion along said frame, and means responsive to the completion of a bale for supplying power to said actuating means for a period suilicient to move said threader members across and beyond said frame and for said actuating means to begin reverse operation thereby to bring the ends of the binding wire back to that side of the frame on which it was received and to relieve partially the tension on said wire to permit removal thereof from said threader means.

9. The combination in a baler, of a plunger cooperating with a material compressing chamber, hydraulically operated means for passing baling wire about a bale of material, a source of to supply power to said hydraulically operated means, and means responsive to the formation of a bale of material for controlling said valve means.

10. In a baler having a plunger for compressing material, the combination of means for passing baling wire about a bale of material, automatically reversing fluid operated means for reciprocatingly actuating said first means, a source of power for said fluid operated means including a pump connected to said plunger, said pump being intermittently effective to supply power, and means responsive to the formation of a bale of material for determining the eifective periods of said pump.

11. In a baler having a plunger for compressing material, the combination of means for passing baling wire about a bale of material, fluid operated means for reciprocatingly actuating said first means, a source of power for said fluid operated means including a pump, said pump being intermittently effective to supply power, means coordinating the operation of said pump so as to be effective to supply power after a compressing stroke of said plunger, and means responsive to the formation of a bale of material for determining the effective periods of said pump.

12. In a baler having a plunger for compressing material, the combination of means for threading baling wire about a bale of material, fluid operated means for reciprocatingly actuating said first means, said plunger causing said fluid operated means to be actuated in a direction transvers to said reciprocating direction, a source of power for said fluid operated means including a pump intermittently efiective to supply power, means connected between said plunger and said pump whereby said pump will supply power only during a non-compressing stroke of said plunger, and means responsive to the formation of a bale of material for determiningthe efiective operating periods of said pump.

13. In a baler provided with a source of power, the combination comprising a compression chamber, a plunger therefor, a bale case connected to said chamber, a plurality of threader members arranged for movement longitudinally along and transversely of said bale case to move bale binding material along opposite sides of and across the ends of a bale, actuating means for moving said threader members transversely of said bal case, means responsive to predetermined movements of a bale along said case to control the supply of power to aid actuating means to produce transverse movement of said threader member with respect to said case, and means for supplying power to said actuatin means after a compression stroke of said plunger.

14. In a baler, the combination comprising a compression chamber having a plunger, a bale frame connected to said compression chamber and extending longitudinally therefrom, a plurality of threader members, said threader members being arranged for movement longitudinally along said frame in response to successive movements of said plunger to move bale binding material along one side of the bale, actuating means for said threader members for moving said members transversely of said bale frame to move said baling material across th ends of said bale, a source of power for said actuating means, said source operating to supply power only during a rearward movement of said plunger, and means responsive to predetermined movement of said bale along said frame to control the supply of power to said actuating means to produce transverse movement of said threader members with respect to said frame.

15. The combination in baler, of a plunger for compressing material to form a bale, a base case, means transversely and longitudinally movable with respect to said case for threading baling Wire completely around a bale, an intermittently operative source of power for said means, means responsive to the formation of a bale for control ling the supply of power from said source of said first means, and means for coordinating the operation of said power source so as to supply power to said first means only during a non-compressing stroke of said plunger.

1 16. In a leader, the combination comprising a compression chamber having a plunger, a bale frame connected to said compression chamber and extending longitudinally therefrom, a plurality of threader members for threading binding material about a bale, said threader members.

being arranged for movement longitudinally along said frame in one direction in response to successive movements of said plunger, energy storage means for returning said threader members longitudinally along said frame, actuating means for moving said threader members alternately in opposite directions transversely of said bale frame, a source of power for said actuatin means, said source operating to supply power only during the rearward movement of said plunger,

and means responsive to predetermined movement of a ,bale along said frame to control the supply of power to said actuating means to produce transverse movement of said threader members with respect to said frame.

DOUGLAS JOHNSTON. 

